Filter tuning screw material detection device

Abstract

The invention relates to the technical field of filter detection devices, and discloses a filter tuning screw material detection device which comprises a detection screw and a second nut, the second nut is in threaded connection with the outside of the detection screw, a stud is arranged in an inner cavity of the detection screw, a magnet is arranged outside the stud, and the magnet is in threaded connection with the detection screw. A spring is arranged in an inner cavity of the detection screw rod, a third screw is in threaded connection with the outside of the detection screw rod, a gasket is arranged between the third screw and the detection screw rod, a second screw is arranged at the top of the detection screw rod, a first screw is arranged in an inner cavity of the second screw, and a first nut is in threaded connection with the outside of the first screw. The filter tuning screw material detection device ensures that screws made of corresponding materials are installed at different positions of a filter, and stabilizes the signal frequency of the filter. Meanwhile, the device is simple in structure and convenient to operate, the detection difficulty of production personnel is reduced, the detection efficiency is improved, and inconvenience brought to filter production by misloading is reduced.

Description

Technical Field

[0001] This invention relates to the field of filter testing device technology, specifically a filter tuning screw material testing device. Background Technology

[0002] To improve the stability of filter signal frequencies, especially for high-frequency signals, both copper and iron tuning screws are often used in the same filter. Different materials are installed in different positions to enhance the stability of the filter signal frequency. This invention relates to a filter tuning screw material detection device. This device can quickly identify whether the installation position and material of the filter tuning screw have been selected incorrectly. In filter manufacturing, the tuning screw is a key connector that ensures the filter signal frequency. Commonly used tuning screw materials are copper or iron. Different materials are installed in different positions on the filter. Both types of tuning screws need to be silver-plated to improve conductivity. After silver plating, the screws are silver-white, making it impossible for personnel to distinguish between the two types by appearance. They can only be identified by the material box label. Mixing materials can lead to the wrong screw being used or installed, causing great inconvenience to filter manufacturing and affecting the guarantee of the filter signal frequency. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a filter tuning screw material detection device to solve the aforementioned technical problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a filter tuning screw material detection device, comprising: a detection screw and a second nut, the second nut being threadedly connected to the outside of the detection screw, a stud being provided in the inner cavity of the detection screw, a magnet being provided outside the stud, a spring being provided in the inner cavity of the detection screw, a third screw being threadedly connected to the outside of the detection screw, and a washer being provided between the third screw and the detection screw; The top of the detection screw is provided with a second screw, the inner cavity of the second screw is provided with a first screw, the outer thread of the first screw is connected to a first nut, a positive terminal is provided between the first screw and the first nut, a negative terminal is provided between the detection screw and the second nut, and the first screw and the detection screw are in a contact and conductive state. The detection screw is made of copper to ensure the stability of circuit conduction; the second screw is a hollow screw made of insulating material to avoid creating additional conductive paths; the first and third screws are both M2 copper screws to further improve conductivity; the device can also be connected to an external 12V power supply and an LED indicator. The positive terminal of the 12V power supply is connected to the positive terminal and the negative terminal is connected to the negative terminal. The LED indicator is connected in series in the circuit, and the circuit conduction status can be intuitively determined by the on / off state of the LED, thereby identifying the material of the tuning screw.

[0005] Preferably, a locking mechanism is provided on the outside of the detection screw, and a positioning plate is provided on the outside of the locking mechanism. The filter under test is provided at the bottom of the positioning plate. The locking mechanism can stably fix the detection screw on the positioning plate, and according to the number and distribution of the tuning screws on the filter under test, a corresponding number of detection devices can be installed on the positioning plate to realize the one-time detection of multiple tuning screws of the filter under test without the need for individual operation, which greatly improves the detection efficiency and avoids the position offset error during individual detection.

[0006] Preferably, the detection screw has a slot on its exterior, and a locking block is slidably connected to the inner cavity of the slot. The locking block is located inside the locking mechanism. The cooperation between the slot and the locking block enables the detection screw to be circumferentially positioned within the locking mechanism, preventing the detection screw from rotating during detection, ensuring that the magnet is accurately aligned with the tuned screw under test, and improving detection accuracy. At the same time, the sliding cooperation between the locking block and the slot facilitates the installation and disassembly of the detection screw, making subsequent maintenance convenient.

[0007] Preferably, handles are provided on both outer sides of the positioning plate, and rubber sleeves are fitted over the handles. The rubber sleeves are provided with anti-slip textures. The rubber sleeves with anti-slip textures can increase the friction between the operator's hand and the handle, preventing the positioning plate from slipping due to sweaty hands or uneven force, and ensuring the relative position of the positioning plate and the filter under test is stable during testing. At the same time, the rubber sleeves can cushion the pressure of the hand grip, reduce fatigue during long-term operation, and improve operating comfort.

[0008] Preferably, the positioning plate has evenly spaced circular grooves on its outer surface, and the interior of the grooves is welded to the exterior of the locking mechanism. The evenly spaced circular grooves on the positioning plate can accurately position the installation position of the locking mechanism, ensuring that the distribution spacing of multiple locking mechanisms is completely matched with the distribution spacing of the tuning screws on the filter under test, thus avoiding misalignment of the locking mechanism and preventing the detection device from being unable to align with the tuning screws. The welding connection method can ensure the connection strength between the locking mechanism and the positioning plate, preventing the locking mechanism from loosening and falling off during testing.

[0009] Preferably, the slot is an annular slot, with vertical slots on both sides of the bottom of the annular slot, and wear-resistant pads embedded in the inner cavity of the vertical slots; the annular slot structure allows the detection screw to be finely adjusted in angle within the locking mechanism, making it easier for the magnet to be close to the tuning screw at its maximum area, thereby improving the adsorption sensitivity of the iron tuning screw; the wear-resistant pads in the vertical slots can reduce the frictional wear between the locking block and the slot, extend the service life of both, and at the same time enhance the tightness of the locking, preventing the detection screw from moving axially.

[0010] Preferably, both the detection screw and the stud are made of copper, and the magnet is a strong magnetic block iron. The stud and the magnet are fixedly connected by welding. The copper detection screw and stud not only have excellent electrical conductivity, but also good mechanical strength and corrosion resistance, which can prevent the device from being affected by rust or structural damage. The strong magnetic block iron can generate a strong attraction force, quickly attracting the iron tuning screw and driving the stud to move, ensuring the response speed of material identification. The welded and fixed stud and magnet are firmly connected to prevent them from separating during detection and ensure the normal functioning of the device.

[0011] Preferably, the spring is in a pre-compressed state, and under the action of the spring's elastic force, the third screw and the first screw initially maintain contact and conduction. The pre-compressed state of the spring can continuously apply elastic force to the third screw towards the first screw, ensuring that the two are always stably connected when the iron tuning screw is not being detected, avoiding the LED light from going out due to poor contact caused by insufficient elastic force. At the same time, the pre-compressed spring has strong elastic recovery capability, and the third screw can be quickly pushed back to its original position after the iron tuning screw is removed, so that the device can be reused for multiple tests, improving reusability.

[0012] Preferably, there are two second nuts, which are located on both sides of the negative terminal and are clamped and fixed by tightening the two second nuts. The two second nuts clamp the negative terminal from both sides, and the tightness can be adjusted to ensure that the terminal and the detection screw are in close contact, avoiding poor circuit contact from affecting the detection judgment. At the same time, the double clamping can prevent the negative terminal from shifting during detection, ensure circuit stability, and facilitate the subsequent disassembly and maintenance of the terminal.

[0013] Preferably, the washer is located between the head of the third screw and the end face of the detection screw, and the washer is a copper washer. The copper washer can ensure smooth electrical conductivity between the third screw and the detection screw, and avoid poor contact that could cause electrical obstruction. At the same time, the washer can disperse the pressure of the head of the third screw on the end face of the detection screw, prevent damage to the end face by indentation, protect the structural integrity of the device, and also play an anti-loosening role, reducing the probability of the screw loosening during testing.

[0014] Compared with the prior art, the present invention provides a filter tuning screw material detection device, which has the following beneficial effects: This filter tuning screw material detection device utilizes a copper detection screw and two M2-sized copper first and third screws, designed with a conductive contact between them to ensure stable circuit conduction. The hollow, insulated second screw prevents additional conductive paths, further ensuring accurate circuit operation. The device can be connected to an external 12V power supply and LED indicators. The LEDs are connected in series in the circuit formed by the positive and negative terminals, allowing for direct observation of the circuit status and rapid identification of the tuning screw material. This solves the problem of difficulty in manually distinguishing between silver-plated copper and iron screws due to their similar appearance. It eliminates the need for material box labels, preventing the risk of mixed or incorrect installations and ensuring that the correct material screw is installed in different positions on the filter, stabilizing the filter signal frequency. Furthermore, the device's simple structure and easy operation reduce the difficulty of inspection for production personnel, improve inspection efficiency, and minimize the inconvenience caused by incorrect installations in filter production. Attached Figure Description

[0015] Figure 1 This is a front view of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a planar schematic diagram of the present invention; Figure 4 This is a schematic diagram illustrating the operation of the present invention; Figure 5 This is a partial cross-sectional view of the card block of the present invention.

[0016] In the diagram: 1. Detection screw; 2. Washer; 3. First nut; 4. First screw; 5. Second screw; 6. Stud; 7. Magnet; 8. Third screw; 9. Second nut; 10. Spring; 11. Negative terminal; 12. Positive terminal; 13. Slot; 14. Handle; 15. Positioning plate; 16. Filter under test; 17. Locking mechanism; 18. Block. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] This invention provides a technical solution; please refer to [link / reference]. Figure 1 and Figure 2A filter tuning screw material detection device includes: a detection screw 1 and a second nut 9, the second nut 9 being threadedly connected to the outside of the detection screw 1, a stud 6 being provided in the inner cavity of the detection screw 1, a magnet 7 being provided outside the stud 6, a spring 10 being provided in the inner cavity of the detection screw 1, a third screw 8 being threadedly connected to the outside of the detection screw 1, and a washer 2 being provided between the third screw 8 and the detection screw 1; The top of the detection screw 1 is provided with a second screw 5, the inner cavity of the second screw 5 is provided with a first screw 4, the external thread of the first screw 4 is connected to a first nut 3, a positive terminal 12 is provided between the first screw 4 and the first nut 3, a negative terminal 11 is provided between the detection screw 1 and the second nut 9, and the first screw 4 and the detection screw 1 are in a contact and conductive state. Please see Figure 3 and Figure 4 The detection screw 1 is made of copper to ensure the stability of circuit conduction; the second screw 5 is a hollow screw made of insulating material to avoid creating additional conductive paths; the first screw 4 and the third screw 8 are both M2 copper screws to further improve conductivity; at the same time, the device can be connected to an external 12V power supply and an LED indicator. The positive terminal of the 12V power supply is connected to the positive terminal 12 and the negative terminal is connected to the negative terminal 11. The LED indicator is connected in series in the circuit. The circuit conduction status can be intuitively judged by the on / off state of the LED, thereby identifying the material of the tuning screw.

[0019] Please see Figure 4 and Figure 5 The detection screw 1 is provided with a locking mechanism 17 on its outside, and a positioning plate 15 is provided on the outside of the locking mechanism 17. The filter under test 16 is provided at the bottom of the positioning plate 15. The detection screw 1 can be stably fixed on the positioning plate 15 by the locking mechanism 17. According to the number and distribution of the tuning screws on the filter under test 16, a corresponding number of detection devices can be installed on the positioning plate 15 to realize the one-time detection of multiple tuning screws of the filter under test 16 without the need for individual operation, which greatly improves the detection efficiency and avoids the position offset error during individual detection.

[0020] The detection screw 1 has a slot 13 on its outside, and a locking block 18 is slidably connected to the inner cavity of the slot 13. The locking block 18 is located inside the locking mechanism 17. The cooperation between the slot 13 and the locking block 18 can realize the circumferential positioning of the detection screw 1 within the locking mechanism 17, prevent the detection screw 1 from rotating during detection, ensure that the magnet 7 is accurately aligned with the tuned screw under test, and improve the detection accuracy. At the same time, the sliding cooperation between the locking block 18 and the slot 13 facilitates the installation and removal of the detection screw 1, which is convenient for subsequent maintenance.

[0021] Handles 14 are provided on both outer sides of the positioning plate 15. Rubber sleeves are fitted over the handles 14, and the rubber sleeves have anti-slip textures. The anti-slip rubber sleeves can increase the friction between the operator's hand and the handles 14, preventing the positioning plate 15 from slipping due to sweaty hands or uneven force, and ensuring the relative position of the positioning plate 15 and the filter under test 16 is stable during testing. At the same time, the rubber sleeves can cushion the pressure of the hand grip, reduce fatigue during long-term operation, and improve operating comfort.

[0022] The positioning plate 15 has evenly spaced circular grooves on its exterior, and the interior of the grooves is welded to the exterior of the locking mechanism 17. The evenly spaced circular grooves on the positioning plate 15 can accurately position the installation position of the locking mechanism 17, ensuring that the distribution spacing of multiple locking mechanisms 17 is completely matched with the distribution spacing of the tuning screws on the filter under test 16, thus avoiding the detection device from being unable to align with the tuning screws due to installation misalignment of the locking mechanism 17. The welding connection method can ensure the connection strength between the locking mechanism 17 and the positioning plate 15, preventing the locking mechanism 17 from loosening and falling off during testing.

[0023] The slot 13 is an annular slot, with vertical slots on both sides of the bottom of the annular slot. Wear-resistant pads are embedded in the inner cavity of the vertical slots. The annular slot structure allows the detection screw 1 to be finely adjusted in angle within the locking mechanism 17, making it easier for the magnet 7 to be close to the tuning screw at its maximum area, thus improving the adsorption sensitivity of the iron tuning screw. The wear-resistant pads in the vertical slots can reduce the frictional wear between the locking block 18 and the slot 13, extend the service life of both, and enhance the tightness of the locking, preventing the detection screw 1 from moving axially.

[0024] Both the detection screw 1 and stud 6 are made of copper, and the magnet 7 is a strong magnetic block iron. The stud 6 and magnet 7 are fixedly connected by welding. The copper detection screw 1 and stud 6 not only have excellent electrical conductivity, but also have good mechanical strength and corrosion resistance, which can prevent the device from being affected by rust or structural damage. The strong magnetic block iron can generate a strong attraction force, quickly attracting the iron tuning screw and driving the stud 6 to move, ensuring the response speed of material recognition. The welded connection between the stud 6 and magnet 7 is firm, preventing them from separating during detection and ensuring the normal functioning of the device.

[0025] The spring 10 is in a pre-compressed state, and under the elastic force of the spring 10, the third screw 8 and the first screw 4 are initially in contact and conductive state. The pre-compressed state of the spring 10 can continuously apply elastic force to the third screw 8 toward the first screw 4, ensuring that the two are always stably conductive when the iron tuning screw is not being detected, avoiding poor contact due to insufficient elastic force that could cause the LED to turn off unexpectedly. At the same time, the pre-compressed spring 10 has strong elastic recovery capability, and can quickly push the third screw 8 to reset after the iron tuning screw is removed, so that the device can be reused for multiple tests and improve reusability.

[0026] There are two second nuts 9, which are located on both sides of the negative terminal 11. The negative terminal 11 is clamped and fixed by tightening the two second nuts 9. The two second nuts 9 clamp the negative terminal 11 from both sides. The tightness can be adjusted to ensure that the terminal is in close contact with the detection screw 1, so as to avoid poor circuit contact affecting the detection judgment. At the same time, the double clamping can prevent the negative terminal 11 from shifting during detection, ensure circuit stability, and facilitate the subsequent disassembly and maintenance of the terminal.

[0027] The washer 2 is located between the head of the third screw 8 and the end face of the detection screw 1, and the washer 2 is a copper washer plate. The copper washer 2 can ensure smooth electrical conductivity between the third screw 8 and the detection screw 1 and avoid poor contact that could cause electrical obstruction. At the same time, the washer 2 can disperse the pressure of the head of the third screw 8 on the end face of the detection screw 1, prevent damage to the end face by indentation, protect the structural integrity of the device, and also play an anti-loosening role, reducing the probability of the screw loosening during testing.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter tuning screw material detection device, comprising: The detection screw (1) and the second nut (9) are threadedly connected to the outside of the detection screw (1). The detection screw (1) has a stud (6) in its inner cavity, a magnet (7) in its outer cavity, a spring (10) in its inner cavity, a third screw (8) in its outer thread, a washer (2) in its outer thread, a second screw (5) in its top, a first screw (4) in its inner cavity, a first nut (3) in its outer thread, a positive terminal (12) in its outer thread, a negative terminal (11) in its outer thread, and a contact and conduction state between the first screw (4) and the detection screw (1).

2. The filter tuning screw material detection device according to claim 1, characterized in that: The detection screw (1) is provided with a locking mechanism (17) on the outside, and a positioning plate (15) is provided on the outside of the locking mechanism (17). The filter to be tested (16) is provided at the bottom of the positioning plate (15).

3. The filter tuning screw material detection device according to claim 2, characterized in that: The detection screw (1) has a slot (13) on its outside, and a block (18) is slidably connected to the inner cavity of the slot (13). The block (18) is located inside the locking mechanism (17).

4. The filter tuning screw material detection device according to claim 2, characterized in that: The positioning plate (15) has handles (14) on both sides of its outer side. The handles (14) are fitted with rubber sleeves, and the rubber sleeves are provided with anti-slip textures.

5. The filter tuning screw material detection device according to claim 2, characterized in that: The positioning plate (15) has uniformly opened circular grooves on its outside, and the inside of the circular grooves is welded to the outside of the locking mechanism (17).

6. The filter tuning screw material detection device according to claim 3, characterized in that: The slot (13) is an annular slot, and vertical slots are provided on both sides of the bottom of the annular slot. Wear-resistant pads are embedded in the inner cavity of the vertical slots.

7. The filter tuning screw material detection device according to claim 1, characterized in that: The detection screw (1) and stud (6) are both copper screw studs, the magnet (7) is a strong magnetic block iron, and the stud (6) and the magnet (7) are fixedly connected by welding.

8. The filter tuning screw material detection device according to claim 1, characterized in that: The spring (10) is in a pre-compressed state, and under the elastic force of the spring (10), the third screw (8) and the first screw (4) are initially in contact and connected.

9. The filter tuning screw material detection device according to claim 1, characterized in that: There are two second nuts (9), which are located on both sides of the negative terminal (11) and are clamped and fixed by tightening the two second nuts (9).

10. The filter tuning screw material detection device according to claim 1, characterized in that: The washer (2) is located between the head of the third screw (8) and the end face of the detection screw (1), and the washer (2) is a copper washer.

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